What is "unliveried"

Usage examples of "unliveried".

A half-hour later Philip was outside with the Duke, walking slowly through the court-yard to an open gateway, where waited a carriage with unliveried coachman and outriders.

The rest of the time they were fastened on Rupert, now and then jumping apprehensively to the snoozing bronze-haired infant carried by the third unliveried adult who trailed behind both King and Queen.